I wanted to try this product to get the exact mixture of what the 10% salt/water ratio was. I use this to flush my eyes at the shop when I get debris/dust in my eyes, it works great (use the supplied eye dropper otherwise it makes a mess and you'll waste most of it as I did!). I am going to purchase the 3X salt and make my own eyewash now as this one was a little pricey for what you get.